A museum exhibit dedicated to the Swedish supergroup is set to open next spring in Stockholm. If you go, you’ll get to pose with life-size holograms of band members Bjorn Ulvaeus, Benny Andersson, Agnetha Faltskog and Anni-Frid Lyngstad, and that’s only the beginning.

Before you catch yourself thinking, “Isn’t Mamma Mia! already kind of an ABBA museum?” consider this: the Swedish pop group has sold almost 400 million records since the 1970s. Clearly, a long-running musical and movie and relentless airplay were only the beginning.

ABBA was formed in 1972 by two sets of married couples (they are all now divorced) and became famous after they won the 1974 Eurovision Song Contest with “Waterloo.” Bigger hits like “Dancing Queen” and “Super Trouper” came later, before the band broke up in late 1982. Forty years later, the foursome has accumulated countless costumes, instruments and more, all of which were displayed in the ABBAWORLD exhibition that toured Europe and Australia in 2009-2011.

Now, the exhibit, renamed “ABBA The Museum,” will be part of a Swedish music hall of fame set to open in 2013. After years of failed plans for an ABBA-themed museum, construction is underway on the Stockholm island of Djurgarden. All four of the group’s members plan to attend the opening, but insist that no reunion tour will follow.

“We are the only group of that status that has never been reunited. I think that is cool,” Ulvaeus told The Associated Press. “It is a strength for ABBA that you remember those young, ambitious, energetic people during the ’70s rather than some feeble old folks who feel compelled to get up and play all the time.”

Comeback or no, the group is still impressively relevant and part of an auspicious Swedish musical heritage including, but not limited to, Ace of Base, Roxette, Europe, Lykke Li, and Avicii.